摘要
加装液力缓速器汽车恒速下坡控制是一个时变、非线性控制过程。为使汽车恒速下坡控制满足无静差、响应快的要求,通过分析液力缓速器控制特性与模糊控制特点,提出采用分级变论域模糊控制策略实现汽车恒速下坡控制。采用MATLAB/Simulink建立重型汽车下坡动力学模型和分级变论域模糊控制器,对汽车恒速下坡控制进行仿真分析,并与常规模糊控制算法控制性能进行比较。研究结果表明:分级变论域模糊控制算法能满足汽车恒速下坡控制性能要求,控制效果明显优于常规模糊控制。
The constant speed downhill control of the vehicle with a hydraulic retarder is a process of time-varying,nonlinearity.In order to make the vehicle constant speed downhill control meet the requirement of no static difference and quick response,by analysing the characteristic of control of hydraulic retarder and fuzzy control,a strategy based on fuzzy control with hierarchical variable universe was proposed to realize vehicle constant speed downhill control.The dynamics model for heavy truck downhill and variable universe fuzzy controller were established by MATLAB/Simulink,and simulation analysis for control strategy was conducted.The control effects of vehicle constant speed downhill control were studied and compared with traditional fuzzy control.The results show that the control strategy proposed can effectively realize the performance requirements of constant speed downhill control,and the control effect is obviously superior to traditional fuzzy control.
作者
陈孝玉
敖克勇
刘小雍
张强
CHEN Xiaoyu;AO Keyong;LIU Xiaoyong;ZHANG Qiang(College of Engineering and Technology,Zunyi Normal University,Zunyi Guizhou 563006,China;Department of Automotive Engineering,Zunyi Vocational and Technical College,Zunyi Guizhou 563000,China)
出处
《机床与液压》
北大核心
2019年第10期160-165,共6页
Machine Tool & Hydraulics
基金
贵州省科技合作计划项目(黔科合LH字[2016]7002号)
关键词
液力缓速器
恒速控制
变论域
仿真
Hydraulic retarder
Constant speed control
Variable universe
Simulation
